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Exercise and obesity.

K R Segal1, F X Pi-Sunyer

  • 1Department of Pediatrics, Mount Sinai School of Medicine, New York, New York.

The Medical Clinics of North America
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

Significant exercise is needed for obese patients to improve fitness and reduce disease risks. Combining exercise with caloric restriction is likely necessary for substantial fat loss and body composition changes.

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Area of Science:

  • Obesity research
  • Exercise physiology
  • Cardiovascular health

Background:

  • Exercise training offers benefits for obese individuals, including improved cardiorespiratory fitness and reduced cardiovascular disease risk factors.
  • However, substantial exercise is typically required for body composition changes without caloric restriction, especially for those with limited initial exercise capacity.

Purpose of the Study:

  • To evaluate the effectiveness of exercise alone versus combined exercise and caloric restriction for inducing changes in body composition in obese patients.
  • To examine the impact of exercise on resting metabolism and the thermic effect of food in obese individuals.

Main Methods:

  • Review of existing literature on exercise training, caloric restriction, and their effects on body composition, cardiorespiratory fitness, and metabolic responses in obese populations.

Related Experiment Videos

  • Analysis of the relationship between physical activity, energy expenditure, and the thermic effect of food in relation to body fat content.

    • Main Results:

    • Exercise alone, without caloric restriction, is generally insufficient for significant fat loss in obese individuals unless they are highly motivated.
    • Exercise training does not significantly alter resting metabolism long-term or acutely, especially if lean tissue is not lost.
    • Exercise prior to meals can improve the blunted thermic response to food in obese individuals, but does not fully normalize it.

    Conclusions:

    • A combination of modest caloric restriction and varied physical training modes is likely necessary to achieve favorable body composition changes in obese patients.
    • Physical activity, being under volitional control, plays a crucial role in energy expenditure, but its impact on fat loss is maximized when combined with dietary management.